Gerrymandering is a. known to give the majority party an electoral advantage at the expense of the dominant party. b. the drawing of legislative district boundary lines to give the dominant party an advantage. c. a process that attempts to limit debate on a bill in the Senate. d. a method used by the president when he wants to prevent the passage of legislation.

Option(b) is correct

Explanation:

Gerrymandering is the practice of manipulation or alteration done in political district boundaries for favoring a particular advantage to a party. It is an unjust way of providing advantage so that it can harm other party's votes and effort by wasting it .

Other options are incorrect because  prevention of legislation,limiting of bill in Senate and providing extra electoral benefit to major party are not described as gerrymandering .Thus, the correct opinion is option(b)

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